wastewater treatment plant improvements …...treatment plant (wwtp) is in need of upgrades to...
TRANSCRIPT
W a s t e w a t e r Tre a t m e n t P la n t IMPROVEMENTS P ROJECT
Staff Presentation to City CouncilOctober 17, 2019
STEVENSON
Background
Project Schedule
Immediate Improvements
Preliminary Design
Implementation Plan
Next Steps
PRESENTATION OUTLINE
City’s wastewater treatment plant
(WWTP) is in need of upgrades to provide current and future
capacity
The General Sewer Plan/Facility Plan
Update identified ~$16 Million in
improvements
City’s consultant is currently designing the
first phase of these upgrades
BACKGROUND
PROJECT SCHEDULE
WWTP has had multiple permit violations
More were expected - full improvements won’t be complete until December 2022
Immediate upgrades fast-tracked to reduce permit violations in the interim
Immediate upgrades will be constructed by the end of the year
IMMEDIATE IMPROVEMENTS
Predesign report includes:Technical memos and
Prelim drawingsBasis for design of
Phase 1Cost estimate for
Phase 1Implementation plan
for Phase 1 and future improvements
Predesign report complete, submitted to Department of Ecology by October 31st.
PRELIMINARY DESIGN
DESIGN OF PHASE 1
Per the Facility Plan:
$10.9 Million to design and build
Phase 1
Cost saving measures to reduce cost and delay :
Remodel the existing lab
building instead of a new building
Delay construction of the sludge
thickening building
Delay construction of the second UV
channel
The current design:
$8.2 Million to design and build
Phase 1
SITE LAYOUT – PHASE 1
SITE LAYOUT – PHASE 2
SITE LAYOUT – PHASE 3
SITE LAYOUT – FUTURE
Funding Package A
$5.1M
Rock Creek Pump Station
Fairgrounds Pump Station
Cascade Avenue Pump Station
WWTP Flood Protection
WWTP Standby Generator & SCADA
Kanaka Pump Station
Cascade Interceptor
Funding Package B
$8.2M
WWTP Improvements
(Phase 1)
Funding Package C
$1.0M
WWTP Improvements
(Phase 2)
Funding Package D
$2.7M
WWTP Improvements
(Phase 3)
IMPLEMENTATION PLAN
Final design of Phase I
Improvements complete by June 2020
Funding procurement 2020-2021
Construction 2021-2022
NEXT STEPS
QUESTIONS